Home / 13,787.65-20,681.81-3,927.02

Finding the Fourth Proportional to 13,787.65, 20,681.81 and 3,927.02

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Solution

The fourth proportional to 13,787.65, 20,681.81 and 3,927.02 is: 5,890.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.65 : 20,681.81 = 3,927.02 : x
  2. Step 2: Convert to fraction form
    13,787.65/20,681.81 = 3,927.02/x
  3. Step 3: Cross multiply
    13,787.65x = 20,681.81 × 3,927.02
  4. Step 4: Simplify right side
    13,787.65x = 81,217,795.28
  5. Step 5: Solve for x
    x = 81,217,795.28/13,787.65
  6. Step 6: Final answer
    x = 5,890.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.